Lister plow



Patented Oct. 11, 1927.

UNITED STATE-S PATENT OFFICE.

JULIUS PETERSON, OF MOLINE, ILLNOIS, ASSIGNOR TO DEERE' & COMPANY, 0FMOLINE ILLINOIS, A CORPORATION 0F ILLINOIS.

Lrsfrun PLOW.'

Application filed January 5, 1927. Serial No.' 159,030.

My invention relates to lister plows, and more particularly to the meansemployed to secure the plow body to the plow bea-m, said meanscomprising a frog made of sheet metal and formed to such a shape bestsuited to be rigidly secured to the plow and the plow beam.

Referring to the drawing in which similar numerals indicate identicalpart-s:

Figure 1 is a bottom plan view of a lister plow and its beam and myimproved frog thereon.

The plow body consists of the share 1 and the moldboards 2 and S, thelatter secured to the share 1 by straps 4L and 5 bolted to the share andthe moldboards 2 and `3 respectively. The frog 4 is bent on anapproximately central longitudinal line 5a; one side 6 of the frog isrigidly attached to the share by bolts 7 and to one of the moldboards bybolts 8, and fits snugly to the moldboard 2. The opposite side 9 of thefrog, for part of its length forwardly, fits snugly to the share 1 andthe moldboard 3, and is secured rigidly to the share 1 by bolt 7 and tothe moldboard 3 by a bolt 10.

Rearwardly of the bolt 10, the part 9 of the frog is bent rearwardly andinwardly, as at 11, to form a loop having a flattened portion 12 adaptedto contactwith a side of the plow beam 13 at which point it is securedto the beam by a bolt 14. Rearwardly of the bolt 14, the part 9 is bentto form a reverse loop having a. attened port-ion 15, which is attachedto the moldboard 3 by a bolt 16. The rear loop terminates in arearwardly extending part 17 bent in parallelism with the beam 13 towhich it is rigidly secured by a bolt 18. Forwardly the frog terminatesin a point 19.

It is well known in the art and manufactures that frogs, utilized inlister plows, are made of cast iron, litting snugly to the plow partsand having a central longitudinal web to which the plow beam isattached. The cast frog, however, has undesirable features which I haveeliminate-d by making the frog of sheet steel, and upsetting or bendingone side of the frog not only to secure it properly to al plow beam, butto dispense with the central web of the cast frog as generally used tosecure the beam and frog together. By bending one side of the frog inthe manner shown and described, the danger of breakage, common in castfrogs from lateral strain, has been removed, the effective and durablequalities of the frog have been materially increased and the cost ofmanufacture materially lessened. As anew article of manufacture, thefrog can be readily supplied in quantity to meet the demand for astronger and more durable frog than is'commonly in use.

What I claim is: f

As a new article of manufacture, a frog for lister plows made of sheetmetal bent at its longitudinal center and having a forward pointedtermination; said frog on one side of said center, for its entirelength, adapted to conform to the underside of a. lister plow body; andsimilarly formed forwardly, for part of its length, on the opposite side'of said center; a loop upset rearward of said part having a flattenedportion for attachment to a plow beam; a reverse loop adjacent saidlirst mentioned loop, with its central part adapted to be attached to alister plow body;`said reverse loop having a rearwardly extended partadapted to be secured to a lister plow beam.

JULrUs PETERSON.

